#include <stdint.h>
#include <string.h>
#include "no_os_util.h"
#include "no_os_i2c.h"

Include dependency graph for lt3074.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	lt3074_dev

struct	lt3074_init_param

struct	lt3074_status

Macros
#define	LT3074_SEND_BYTE 0 /* Send-only command */

#define	LT3074_BYTE 1 /* Byte */

#define	LT3074_WORD 2 /* Word */

#define	LT3074_R0B (LT3074_SEND_BYTE << 8)

#define	LT3074_R1B (LT3074_BYTE << 8)

#define	LT3074_R2B (LT3074_WORD << 8)

#define	LT3074_R6B (6 << 8) /* Block of size 6*/

#define	LT3074_SIZE_MSK NO_OS_GENMASK(15,8)

#define	LT3074_CMD(x)

#define	LT3074_ADDR_SIZE(x)

#define	LT3074_PAGE (LT3074_R1B \| 0x00)

#define	LT3074_OPERATION (LT3074_R1B \| 0x01)

#define	LT3074_ON_OFF_CONFIG (LT3074_R1B \| 0x02)

#define	LT3074_CLEAR_FAULTS (LT3074_R0B \| 0x03)

#define	LT3074_WRITE_PROTECT (LT3074_R1B \| 0x10)

#define	LT3074_CAPABILITY (LT3074_R1B \| 0x19)

#define	LT3074_VOUT_MODE (LT3074_R1B \| 0x20)

#define	LT3074_VOUT_OV_WARN_LIMIT (LT3074_R2B \| 0x42)

#define	LT3074_VOUT_UV_WARN_LIMIT (LT3074_R2B \| 0x43)

#define	LT3074_IOUT_OC_FAULT_LIMIT (LT3074_R2B \| 0x46)

#define	LT3074_IOUT_OC_FAULT_RESPONSE (LT3074_R1B \| 0x47)

#define	LT3074_OT_WARN_LIMIT (LT3074_R2B \| 0x51)

#define	LT3074_VIN_OV_WARN_LIMIT (LT3074_R2B \| 0x57)

#define	LT3074_VIN_UV_WARN_LIMIT (LT3074_R2B \| 0x58)

#define	LT3074_STATUS_BYTE (LT3074_R1B \| 0x78)

#define	LT3074_STATUS_WORD (LT3074_R2B \| 0x79)

#define	LT3074_STATUS_VOUT (LT3074_R1B \| 0x7A)

#define	LT3074_STATUS_IOUT (LT3074_R1B \| 0x7B)

#define	LT3074_STATUS_INPUT (LT3074_R1B \| 0x7C)

#define	LT3074_STATUS_TEMPERATURE (LT3074_R1B \| 0x7D)

#define	LT3074_STATUS_CML (LT3074_R1B \| 0x7E)

#define	LT3074_STATUS_MFR_SPECIFIC (LT3074_R1B \| 0x80)

#define	LT3074_READ_VIN (LT3074_R2B \| 0x88)

#define	LT3074_READ_VOUT (LT3074_R2B \| 0x8B)

#define	LT3074_READ_IOUT (LT3074_R2B \| 0x8C)

#define	LT3074_READ_TEMPERATURE_1 (LT3074_R2B \| 0x8D)

#define	LT3074_REVISION (LT3074_R1B \| 0x98)

#define	LT3074_IC_DEVICE_ID (LT3074_R6B \| 0xAD)

#define	LT3074_IC_DEVICE_REV (LT3074_R2B \| 0xAE)

#define	LT3074_MFR_MARGIN (LT3074_R1B \| 0xC4)

#define	LT3074_MFR_READ_VBIAS (LT3074_R2B \| 0xC6)

#define	LT3074_MFR_BIAS_OV_WARN_LIMIT (LT3074_R2B \| 0xC7)

#define	LT3074_MFR_BIAS_UV_WARN_LIMIT (LT3074_R2B \| 0xC8)

#define	LT3074_MFR_IOUT_MIN_WARN_LIMIT (LT3074_R2B \| 0xC9)

#define	LT3074_MFR_SPECIAL_ID (LT3074_R2B \| 0xE7)

#define	LT3074_MFR_DEFAULT_CONFIG (LT3074_R1B \| 0xF5)

#define	LT3074_MFR_RAIL_ADDRESS (LT3074_R1B \| 0xFA)

#define	LT3074_MFR_RESET (LT3074_R0B \| 0xFD)

#define	LT3074_CRC_POLYNOMIAL 0x7

#define	LT3074_MARGIN_HIGH_MSK 0xF0

#define	LT3074_MARGIN_LOW_MSK 0x0F

#define	LT3074_OPERATION_ACCESS_MSK (NO_OS_GENMASK(5,4) \| NO_OS_BIT(7))

#define	LT3074_SPECIAL_ID_VALUE 0x1C1D

#define	LT3074_STATUS_BYTE_TYPE_MSK 0x01

#define	LT3074_STATUS_VOUT_TYPE_MSK 0x02

#define	LT3074_STATUS_IOUT_TYPE_MSK 0x04

#define	LT3074_STATUS_INPUT_TYPE_MSK 0x08

#define	LT3074_STATUS_TEMP_TYPE_MSK 0x10

#define	LT3074_STATUS_CML_TYPE_MSK 0x20

#define	LT3074_STATUS_MFR_SPECIFIC_TYPE_MSK 0x40

#define	LT3074_STATUS_WORD_TYPE_MSK 0x80

#define	LT3074_STATUS_ALL_TYPE_MSK 0xFF

Enumerations
enum	lt3074_operation_type { LT3074_OPERATION_OFF , LT3074_OPERATION_ON = 0x80 , LT3074_OPERATION_MARGIN_HIGH = 0xA0 , LT3074_OPERATION_MARGIN_LOW = 0x90 }

enum	lt3074_value_type { LT3074_VIN = LT3074_READ_VIN , LT3074_VOUT = LT3074_READ_VOUT , LT3074_IOUT = LT3074_READ_IOUT , LT3074_TEMP = LT3074_READ_TEMPERATURE_1 , LT3074_VBIAS = LT3074_MFR_READ_VBIAS }

enum	lt3074_limit_type { LT3074_VOUT_OV_WARN_LIMIT_TYPE = LT3074_VOUT_OV_WARN_LIMIT , LT3074_VOUT_UV_WARN_LIMIT_TYPE = LT3074_VOUT_UV_WARN_LIMIT , LT3074_IOUT_OC_FAULT_LIMIT_TYPE = LT3074_IOUT_OC_FAULT_LIMIT , LT3074_OT_WARN_LIMIT_TYPE = LT3074_OT_WARN_LIMIT , LT3074_VIN_OV_WARN_LIMIT_TYPE = LT3074_VIN_OV_WARN_LIMIT , LT3074_VIN_UV_WARN_LIMIT_TYPE = LT3074_VIN_UV_WARN_LIMIT , LT3074_VBIAS_OV_WARN_LIMIT_TYPE = LT3074_MFR_BIAS_OV_WARN_LIMIT , LT3074_VBIAS_UV_WARN_LIMIT_TYPE = LT3074_MFR_BIAS_UV_WARN_LIMIT , LT3074_IOUT_MIN_WARN_LIMIT_TYPE = LT3074_MFR_IOUT_MIN_WARN_LIMIT }

enum	lt3074_status_type { LT3074_STATUS_BYTE_TYPE = LT3074_STATUS_BYTE_TYPE_MSK , LT3074_STATUS_VOUT_TYPE = LT3074_STATUS_VOUT_TYPE_MSK , LT3074_STATUS_IOUT_TYPE = LT3074_STATUS_IOUT_TYPE_MSK , LT3074_STATUS_INPUT_TYPE = LT3074_STATUS_INPUT_TYPE_MSK , LT3074_STATUS_TEMP_TYPE = LT3074_STATUS_TEMP_TYPE_MSK , LT3074_STATUS_CML_TYPE = LT3074_STATUS_CML_TYPE_MSK , LT3074_STATUS_MFR_SPECIFIC_TYPE = LT3074_STATUS_MFR_SPECIFIC_TYPE_MSK , LT3074_STATUS_WORD_TYPE = LT3074_STATUS_WORD_TYPE_MSK , LT3074_STATUS_ALL_TYPE = LT3074_STATUS_ALL_TYPE_MSK }

enum	lt3074_margin { LT3074_MARGIN_PERCENTAGE_0 , LT3074_MARGIN_PERCENTAGE_1 , LT3074_MARGIN_PERCENTAGE_3 , LT3074_MARGIN_PERCENTAGE_5 , LT3074_MARGIN_PERCENTAGE_10 , LT3074_MARGIN_PERCENTAGE_15 , LT3074_MARGIN_PERCENTAGE_20 , LT3074_MARGIN_PERCENTAGE_25 , LT3074_MARGIN_PERCENTAGE_30 }

Functions
int	lt3074_init (struct lt3074_dev *dev, struct lt3074_init_param init_param)
	Initialize the device structure.

int	lt3074_remove (struct lt3074_dev *dev)
	Free or remove device instance.

int	lt3074_send_byte (struct lt3074_dev *dev, uint32_t cmd)
	Send a PMBus command to the device.

int	lt3074_read_byte (struct lt3074_dev dev, uint32_t cmd, uint8_t data)
	Perform a raw PMBus read byte operation.

int	lt3074_write_byte (struct lt3074_dev *dev, uint32_t cmd, uint8_t value)
	Perform a raw PMBus write byte operation.

int	lt3074_read_word (struct lt3074_dev dev, uint32_t cmd, uint16_t word)
	Perform a raw PMBus read word operation.

int	lt3074_write_word (struct lt3074_dev *dev, uint32_t cmd, uint16_t word)
	Perform a raw PMBus write word operation.

int	lt3074_read_word_data (struct lt3074_dev dev, uint32_t cmd, int data)
	Perform a PMBus read word operation and converts to actual value.

int	lt3074_write_word_data (struct lt3074_dev *dev, uint32_t cmd, int data)
	Converts value to register data and do PMBus write word operation.

int	lt3074_read_block_data (struct lt3074_dev dev, uint32_t cmd, uint8_t data, size_t nbytes)
	Perform a PMBus read block operation.

int	lt3074_reg_read (struct lt3074_dev dev, uint32_t reg, uint32_t data)
	Generic register read wrapper.

int	lt3074_reg_write (struct lt3074_dev *dev, uint32_t reg, uint32_t val)
	Generic register write wrapper.

int	lt3074_read_value (struct lt3074_dev dev, enum lt3074_value_type value_type, int value)
	Read a value.

int	lt3074_read_status (struct lt3074_dev dev, enum lt3074_status_type status_type, struct lt3074_status status)
	Read statuses.

int	lt3074_vout_margin (struct lt3074_dev *dev, enum lt3074_margin margin_high, enum lt3074_margin margin_low)
	Set output voltage margin.

int	lt3074_set_limit (struct lt3074_dev *dev, enum lt3074_limit_type limit, int limit_val)
	Sets the limit value for a specific fault/warning limits.

int	lt3074_set_operation (struct lt3074_dev *dev, enum lt3074_operation_type operation)
	Set operation.

int	lt3074_clear_faults (struct lt3074_dev *dev)
	Clear status registers.

int	lt3074_set_enable_pin (struct lt3074_dev *dev, bool state)
	Enable/Disable the device using the EN pin.

int	lt3074_software_reset (struct lt3074_dev *dev)
	Perform a device software reset.

Macro Definition Documentation

◆ LT3074_ADDR_SIZE

#define LT3074_ADDR_SIZE ( x )

Value:

no_os_field_get(LT3074_SIZE_MSK, x)

LT3074_SIZE_MSK

#define LT3074_SIZE_MSK

Definition lt3074.h:50

no_os_field_get

uint32_t no_os_field_get(uint32_t mask, uint32_t word)

◆ LT3074_BYTE

#define LT3074_BYTE 1 /* Byte */

◆ LT3074_CAPABILITY

#define LT3074_CAPABILITY (LT3074_R1B | 0x19)

◆ LT3074_CLEAR_FAULTS

#define LT3074_CLEAR_FAULTS (LT3074_R0B | 0x03)

◆ LT3074_CMD

#define LT3074_CMD ( x )

Value:

((uint8_t)(x & 0xFF))

◆ LT3074_CRC_POLYNOMIAL

#define LT3074_CRC_POLYNOMIAL 0x7

◆ LT3074_IC_DEVICE_ID

#define LT3074_IC_DEVICE_ID (LT3074_R6B | 0xAD)

◆ LT3074_IC_DEVICE_REV

#define LT3074_IC_DEVICE_REV (LT3074_R2B | 0xAE)

◆ LT3074_IOUT_OC_FAULT_LIMIT

#define LT3074_IOUT_OC_FAULT_LIMIT (LT3074_R2B | 0x46)

◆ LT3074_IOUT_OC_FAULT_RESPONSE

#define LT3074_IOUT_OC_FAULT_RESPONSE (LT3074_R1B | 0x47)

◆ LT3074_MARGIN_HIGH_MSK

#define LT3074_MARGIN_HIGH_MSK 0xF0

◆ LT3074_MARGIN_LOW_MSK

#define LT3074_MARGIN_LOW_MSK 0x0F

◆ LT3074_MFR_BIAS_OV_WARN_LIMIT

#define LT3074_MFR_BIAS_OV_WARN_LIMIT (LT3074_R2B | 0xC7)

◆ LT3074_MFR_BIAS_UV_WARN_LIMIT

#define LT3074_MFR_BIAS_UV_WARN_LIMIT (LT3074_R2B | 0xC8)

◆ LT3074_MFR_DEFAULT_CONFIG

#define LT3074_MFR_DEFAULT_CONFIG (LT3074_R1B | 0xF5)

◆ LT3074_MFR_IOUT_MIN_WARN_LIMIT

#define LT3074_MFR_IOUT_MIN_WARN_LIMIT (LT3074_R2B | 0xC9)

◆ LT3074_MFR_MARGIN

#define LT3074_MFR_MARGIN (LT3074_R1B | 0xC4)

◆ LT3074_MFR_RAIL_ADDRESS

#define LT3074_MFR_RAIL_ADDRESS (LT3074_R1B | 0xFA)

◆ LT3074_MFR_READ_VBIAS

#define LT3074_MFR_READ_VBIAS (LT3074_R2B | 0xC6)

◆ LT3074_MFR_RESET

#define LT3074_MFR_RESET (LT3074_R0B | 0xFD)

◆ LT3074_MFR_SPECIAL_ID

#define LT3074_MFR_SPECIAL_ID (LT3074_R2B | 0xE7)

◆ LT3074_ON_OFF_CONFIG

#define LT3074_ON_OFF_CONFIG (LT3074_R1B | 0x02)

◆ LT3074_OPERATION

#define LT3074_OPERATION (LT3074_R1B | 0x01)

◆ LT3074_OPERATION_ACCESS_MSK

#define LT3074_OPERATION_ACCESS_MSK (NO_OS_GENMASK(5,4) | NO_OS_BIT(7))

◆ LT3074_OT_WARN_LIMIT

#define LT3074_OT_WARN_LIMIT (LT3074_R2B | 0x51)

◆ LT3074_PAGE

#define LT3074_PAGE (LT3074_R1B | 0x00)

◆ LT3074_R0B

#define LT3074_R0B (LT3074_SEND_BYTE << 8)

◆ LT3074_R1B

#define LT3074_R1B (LT3074_BYTE << 8)

◆ LT3074_R2B

#define LT3074_R2B (LT3074_WORD << 8)

◆ LT3074_R6B

#define LT3074_R6B (6 << 8) /* Block of size 6*/

◆ LT3074_READ_IOUT

#define LT3074_READ_IOUT (LT3074_R2B | 0x8C)

◆ LT3074_READ_TEMPERATURE_1

#define LT3074_READ_TEMPERATURE_1 (LT3074_R2B | 0x8D)

◆ LT3074_READ_VIN

#define LT3074_READ_VIN (LT3074_R2B | 0x88)

◆ LT3074_READ_VOUT

#define LT3074_READ_VOUT (LT3074_R2B | 0x8B)

◆ LT3074_REVISION

#define LT3074_REVISION (LT3074_R1B | 0x98)

◆ LT3074_SEND_BYTE

#define LT3074_SEND_BYTE 0 /* Send-only command */

◆ LT3074_SIZE_MSK

#define LT3074_SIZE_MSK NO_OS_GENMASK(15,8)

◆ LT3074_SPECIAL_ID_VALUE

#define LT3074_SPECIAL_ID_VALUE 0x1C1D

◆ LT3074_STATUS_ALL_TYPE_MSK

#define LT3074_STATUS_ALL_TYPE_MSK 0xFF

◆ LT3074_STATUS_BYTE

#define LT3074_STATUS_BYTE (LT3074_R1B | 0x78)

◆ LT3074_STATUS_BYTE_TYPE_MSK

#define LT3074_STATUS_BYTE_TYPE_MSK 0x01

◆ LT3074_STATUS_CML

#define LT3074_STATUS_CML (LT3074_R1B | 0x7E)

◆ LT3074_STATUS_CML_TYPE_MSK

#define LT3074_STATUS_CML_TYPE_MSK 0x20

◆ LT3074_STATUS_INPUT

#define LT3074_STATUS_INPUT (LT3074_R1B | 0x7C)

◆ LT3074_STATUS_INPUT_TYPE_MSK

#define LT3074_STATUS_INPUT_TYPE_MSK 0x08

◆ LT3074_STATUS_IOUT

#define LT3074_STATUS_IOUT (LT3074_R1B | 0x7B)

◆ LT3074_STATUS_IOUT_TYPE_MSK

#define LT3074_STATUS_IOUT_TYPE_MSK 0x04

◆ LT3074_STATUS_MFR_SPECIFIC

#define LT3074_STATUS_MFR_SPECIFIC (LT3074_R1B | 0x80)

◆ LT3074_STATUS_MFR_SPECIFIC_TYPE_MSK

#define LT3074_STATUS_MFR_SPECIFIC_TYPE_MSK 0x40

◆ LT3074_STATUS_TEMP_TYPE_MSK

#define LT3074_STATUS_TEMP_TYPE_MSK 0x10

◆ LT3074_STATUS_TEMPERATURE

#define LT3074_STATUS_TEMPERATURE (LT3074_R1B | 0x7D)

◆ LT3074_STATUS_VOUT

#define LT3074_STATUS_VOUT (LT3074_R1B | 0x7A)

◆ LT3074_STATUS_VOUT_TYPE_MSK

#define LT3074_STATUS_VOUT_TYPE_MSK 0x02

◆ LT3074_STATUS_WORD

#define LT3074_STATUS_WORD (LT3074_R2B | 0x79)

◆ LT3074_STATUS_WORD_TYPE_MSK

#define LT3074_STATUS_WORD_TYPE_MSK 0x80

◆ LT3074_VIN_OV_WARN_LIMIT

#define LT3074_VIN_OV_WARN_LIMIT (LT3074_R2B | 0x57)

◆ LT3074_VIN_UV_WARN_LIMIT

#define LT3074_VIN_UV_WARN_LIMIT (LT3074_R2B | 0x58)

◆ LT3074_VOUT_MODE

#define LT3074_VOUT_MODE (LT3074_R1B | 0x20)

◆ LT3074_VOUT_OV_WARN_LIMIT

#define LT3074_VOUT_OV_WARN_LIMIT (LT3074_R2B | 0x42)

◆ LT3074_VOUT_UV_WARN_LIMIT

#define LT3074_VOUT_UV_WARN_LIMIT (LT3074_R2B | 0x43)

◆ LT3074_WORD

#define LT3074_WORD 2 /* Word */

◆ LT3074_WRITE_PROTECT

#define LT3074_WRITE_PROTECT (LT3074_R1B | 0x10)

Enumeration Type Documentation

◆ lt3074_limit_type

enum lt3074_limit_type

Enumerator
LT3074_VOUT_OV_WARN_LIMIT_TYPE
LT3074_VOUT_UV_WARN_LIMIT_TYPE
LT3074_IOUT_OC_FAULT_LIMIT_TYPE
LT3074_OT_WARN_LIMIT_TYPE
LT3074_VIN_OV_WARN_LIMIT_TYPE
LT3074_VIN_UV_WARN_LIMIT_TYPE
LT3074_VBIAS_OV_WARN_LIMIT_TYPE
LT3074_VBIAS_UV_WARN_LIMIT_TYPE
LT3074_IOUT_MIN_WARN_LIMIT_TYPE

◆ lt3074_margin

enum lt3074_margin

Enumerator
LT3074_MARGIN_PERCENTAGE_0
LT3074_MARGIN_PERCENTAGE_1
LT3074_MARGIN_PERCENTAGE_3
LT3074_MARGIN_PERCENTAGE_5
LT3074_MARGIN_PERCENTAGE_10
LT3074_MARGIN_PERCENTAGE_15
LT3074_MARGIN_PERCENTAGE_20
LT3074_MARGIN_PERCENTAGE_25
LT3074_MARGIN_PERCENTAGE_30

◆ lt3074_operation_type

enum lt3074_operation_type

Enumerator
LT3074_OPERATION_OFF
LT3074_OPERATION_ON
LT3074_OPERATION_MARGIN_HIGH
LT3074_OPERATION_MARGIN_LOW

◆ lt3074_status_type

enum lt3074_status_type

Enumerator
LT3074_STATUS_BYTE_TYPE
LT3074_STATUS_VOUT_TYPE
LT3074_STATUS_IOUT_TYPE
LT3074_STATUS_INPUT_TYPE
LT3074_STATUS_TEMP_TYPE
LT3074_STATUS_CML_TYPE
LT3074_STATUS_MFR_SPECIFIC_TYPE
LT3074_STATUS_WORD_TYPE
LT3074_STATUS_ALL_TYPE

◆ lt3074_value_type

enum lt3074_value_type

Enumerator
LT3074_VIN
LT3074_VOUT
LT3074_IOUT
LT3074_TEMP
LT3074_VBIAS

Function Documentation

◆ lt3074_clear_faults()

int lt3074_clear_faults ( struct lt3074_dev * dev )

Clear status registers.

Parameters

dev	- Device structure

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_init()

int lt3074_init	(	struct lt3074_dev **	device,
		struct lt3074_init_param *	init_param )

Initialize the device structure.

Parameters

device	- Device structure
init_param	- Initialization parameters

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_block_data()

int lt3074_read_block_data	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint8_t *	data,
		size_t	nbytes )

Perform a PMBus read block operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of the read block
nbytes	- Size of the block in bytes

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_byte()

int lt3074_read_byte	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint8_t *	data )

Perform a raw PMBus read byte operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of the byte read

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_status()

int lt3074_read_status	(	struct lt3074_dev *	dev,
		enum lt3074_status_type	status_type,
		struct lt3074_status *	status )

Read statuses.

Parameters

dev	- Device structure
status_type	- Status type. Example values: LT3074_STATUS_BYTE_TYPE LT3074_STATUS_VOUT_TYPE LT3074_STATUS_IOUT_TYPE LT3074_STATUS_INPUT_TYPE LT3074_STATUS_CML_TYPE
status	- Address of the status structure

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_value()

int lt3074_read_value	(	struct lt3074_dev *	dev,
		enum lt3074_value_type	value_type,
		int *	value )

Read a value.

Parameters

dev	- Device structure
value_type	- Value type. Example values: LT3074_VIN LT3074_VOUT LT3074_IOUT LT3074_TEMP LT3074_VBIAS
value	- Address of the read value

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_word()

int lt3074_read_word	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint16_t *	word )

Perform a raw PMBus read word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
word	- Address of the read word

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_read_word_data()

int lt3074_read_word_data	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		int *	data )

Perform a PMBus read word operation and converts to actual value.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Address of data read

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_reg_read()

int lt3074_reg_read	(	struct lt3074_dev *	dev,
		uint32_t	reg,
		uint32_t *	data )

Generic register read wrapper.

Parameters

dev	- Device structure
reg	- PMBus regiser
data	- Address of the read data

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_reg_write()

int lt3074_reg_write	(	struct lt3074_dev *	dev,
		uint32_t	reg,
		uint32_t	val )

Generic register write wrapper.

Parameters

dev	- Device structure
reg	- PMBus register
val	- Value to write

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_remove()

int lt3074_remove ( struct lt3074_dev * dev )

Free or remove device instance.

Parameters

dev	- The device structure

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_send_byte()

int lt3074_send_byte	(	struct lt3074_dev *	dev,
		uint32_t	cmd )

Send a PMBus command to the device.

Parameters

dev	- Device structure
cmd	- PMBus command

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_set_enable_pin()

int lt3074_set_enable_pin	(	struct lt3074_dev *	dev,
		bool	state )

Enable/Disable the device using the EN pin.

Parameters

dev	- Device structure
state	- Enable/Disable state. 0 for disable, 1 for enable.

Returns: 0 in case of success, negative error code otherwise

◆ lt3074_set_limit()

int lt3074_set_limit	(	struct lt3074_dev *	dev,
		enum lt3074_limit_type	limit,
		int	limit_val )

Sets the limit value for a specific fault/warning limits.

Parameters

dev	- Device structure
limit	- The type of limit to set.
limit_val	- The value to set for the specified limit type.

Returns: Returns 0 on success, or a negative error code on failure.

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◆ lt3074_set_operation()

int lt3074_set_operation	(	struct lt3074_dev *	dev,
		enum lt3074_operation_type	operation )

Set operation.

Parameters

dev	- Device structure
operation	- Operation. Accepted values are: LT3074_OPERATION_OFF LT3074_OPERATION_ON LT3074_OPERATION_MARGIN_HIGH LT3074_OPERATION_MARGIN_LOW

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_software_reset()

int lt3074_software_reset ( struct lt3074_dev * dev )

Perform a device software reset.

Parameters

dev	- Device structure

Returns: 0 in case of success, negative error code otherwise

◆ lt3074_vout_margin()

int lt3074_vout_margin	(	struct lt3074_dev *	dev,
		enum lt3074_margin	margin_high,
		enum lt3074_margin	margin_low )

Set output voltage margin.

Parameters

dev	- Device structure
margin_high	- Upper margin
margin_low	- Lower margin

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_write_byte()

int lt3074_write_byte	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint8_t	value )

Perform a raw PMBus write byte operation.

Parameters

dev	- Device structure
cmd	- PMBus command
value	- Byte to be written

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_write_word()

int lt3074_write_word	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		uint16_t	word )

Perform a raw PMBus write word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
word	- Word to write

Returns: 0 in case of success, negative error code otherwise

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◆ lt3074_write_word_data()

int lt3074_write_word_data	(	struct lt3074_dev *	dev,
		uint32_t	cmd,
		int	data )

Converts value to register data and do PMBus write word operation.

Parameters

dev	- Device structure
cmd	- PMBus command
data	- Value to write

Returns: 0 in case of success, negative error code otherwise

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Classes

Macros

Enumerations

Functions

Macro Definition Documentation

◆ LT3074_ADDR_SIZE

◆ LT3074_BYTE

◆ LT3074_CAPABILITY

◆ LT3074_CLEAR_FAULTS

◆ LT3074_CMD

◆ LT3074_CRC_POLYNOMIAL

◆ LT3074_IC_DEVICE_ID

◆ LT3074_IC_DEVICE_REV

◆ LT3074_IOUT_OC_FAULT_LIMIT

◆ LT3074_IOUT_OC_FAULT_RESPONSE

◆ LT3074_MARGIN_HIGH_MSK

◆ LT3074_MARGIN_LOW_MSK

◆ LT3074_MFR_BIAS_OV_WARN_LIMIT

◆ LT3074_MFR_BIAS_UV_WARN_LIMIT

◆ LT3074_MFR_DEFAULT_CONFIG

◆ LT3074_MFR_IOUT_MIN_WARN_LIMIT

◆ LT3074_MFR_MARGIN

◆ LT3074_MFR_RAIL_ADDRESS

◆ LT3074_MFR_READ_VBIAS

◆ LT3074_MFR_RESET

◆ LT3074_MFR_SPECIAL_ID

◆ LT3074_ON_OFF_CONFIG

◆ LT3074_OPERATION

◆ LT3074_OPERATION_ACCESS_MSK

◆ LT3074_OT_WARN_LIMIT

◆ LT3074_PAGE

◆ LT3074_R0B

◆ LT3074_R1B

◆ LT3074_R2B

◆ LT3074_R6B

◆ LT3074_READ_IOUT

◆ LT3074_READ_TEMPERATURE_1

◆ LT3074_READ_VIN

◆ LT3074_READ_VOUT

◆ LT3074_REVISION

◆ LT3074_SEND_BYTE

◆ LT3074_SIZE_MSK

◆ LT3074_SPECIAL_ID_VALUE

◆ LT3074_STATUS_ALL_TYPE_MSK

◆ LT3074_STATUS_BYTE

◆ LT3074_STATUS_BYTE_TYPE_MSK

◆ LT3074_STATUS_CML

◆ LT3074_STATUS_CML_TYPE_MSK

◆ LT3074_STATUS_INPUT

◆ LT3074_STATUS_INPUT_TYPE_MSK

◆ LT3074_STATUS_IOUT

◆ LT3074_STATUS_IOUT_TYPE_MSK

◆ LT3074_STATUS_MFR_SPECIFIC

◆ LT3074_STATUS_MFR_SPECIFIC_TYPE_MSK

◆ LT3074_STATUS_TEMP_TYPE_MSK

◆ LT3074_STATUS_TEMPERATURE

◆ LT3074_STATUS_VOUT

◆ LT3074_STATUS_VOUT_TYPE_MSK

◆ LT3074_STATUS_WORD

◆ LT3074_STATUS_WORD_TYPE_MSK

◆ LT3074_VIN_OV_WARN_LIMIT

◆ LT3074_VIN_UV_WARN_LIMIT

◆ LT3074_VOUT_MODE

◆ LT3074_VOUT_OV_WARN_LIMIT

◆ LT3074_VOUT_UV_WARN_LIMIT

◆ LT3074_WORD

◆ LT3074_WRITE_PROTECT

Enumeration Type Documentation

◆ lt3074_limit_type

◆ lt3074_margin

◆ lt3074_operation_type

◆ lt3074_status_type

◆ lt3074_value_type

Function Documentation

◆ lt3074_clear_faults()

◆ lt3074_init()

◆ lt3074_read_block_data()

◆ lt3074_read_byte()

◆ lt3074_read_status()

◆ lt3074_read_value()